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period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris. The U-shaped cross section of the river valleys is a result of recent glaciation.
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spires. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the
Cascade Range leading to various climate differences.
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in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North
Cascades area.
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is just southeast. Though some of the routes to the summit are technical, it can be reached by a moderate scramble.
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Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.
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The history of the formation of the
Cascade Mountains dates back millions of years ago to the late
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Dome Peak (left), Sinister Peak (center), Gunsight Peak (right) seen from SSE at Cloudy Pass
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Dome Peak (left) and
Sinister Peak (right) viewed from the south at Miners Ridge
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The North
Cascades features some of the most rugged topography in the
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originating in the
Pacific Ocean travel northeast toward the
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Cascade Alpine Guide, Vol. 2; Stevens Pass to Rainy Pass
527:(Map). TopoQwest (United States Geological Survey Maps)
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Lloyd
Anderson, Jim Crooks, Clint Kelley, May 29, 1939
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285:is on the north slopes of Sinister Peak while the
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16:Mountain in Washington (state), United States
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301:climate zone of western North America. Most
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567:The Natural History of Puget Sound Country
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610:Mountains of Chelan County, Washington
605:Mountains of Skagit County, Washington
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329:with craggy peaks and ridges, deep
501:. Mountaineer Books. p. 246.
33:Sinister Peak from Maple Pass area
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569:. University of Washington Press.
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297:Sinister Peak is located in the
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600:Mountains of Washington (state)
413:Geography of the North Cascades
138:Show map of Washington (state)
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625:North American 2000 m summits
257:(8,440+ ft (2,570+ m)) is in
171:Show map of the United States
168:Location in the United States
372:about 50 million years ago.
565:Kruckeberg, Arthur (1991).
470:"Sinister Peak, Washington"
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263:Wenatchee National Forests
354:volcanic igneous activity
309:. As fronts approach the
190:Skagit County, Washington
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59:840 ft (260 m)
362:continental lithosphere
271:Glacier Peak Wilderness
259:Mount Baker-Snoqualmie
135:Location in Washington
87:48.30000°N 121.00972°W
497:Beckey, Fred (2003).
265:in the U.S. state of
346:North American Plate
269:. It is situated in
92:48.30000; -121.00972
49:8,440+ ft (2,570+ m)
83: /
39:Highest point
508:978-0-89886-838-8
307:Cascade Mountains
299:marine west coast
283:Chickamin Glacier
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585:Weather forecast
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352:, episodes of
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303:weather fronts
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287:Garden Glacier
275:North Cascades
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241:Easiest route
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22:Sinister Peak
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529:. Retrieved
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477:. Retrieved
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368:created the
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247:class 3
230:First ascent
199:Parent range
377:Pleistocene
375:During the
90: /
78:121°00′35″W
65:Coordinates
594:Categories
451:References
267:Washington
75:48°18′00″N
55:Prominence
531:March 10,
479:March 10,
279:Dome Peak
219:Dome Peak
103:Geography
45:Elevation
392:See also
386:faulting
366:terranes
273:and the
224:Climbing
212:Topo map
182:Location
418:Gallery
364:called
358:oceanic
335:granite
321:Geology
293:Climate
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382:Uplift
342:Eocene
333:, and
192:, U.S.
186:Chelan
533:2013
503:ISBN
481:2013
384:and
360:and
261:and
217:USGS
188:and
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553:^
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
